Applications of 304 20592PL Flange DN20*PN6 in Piping

In any piping system, the quality of joints and connectors determines long-term performance. Among many flange designs, the Plate Welding Flange stands out for its balance of simplicity, durability, and cost-effectiveness. One widely used model is the 304 20592PL Flange DN20*PN6, designed specifically for low-pressure pipelines.

When purchased in bulk supply from Chinese manufacturers, this flange offers project managers an economical solution without sacrificing technical reliability. Let’s take a closer look at its features, standards, and practical applications.

Understanding the 304 20592PL Flange DN20*PN6

The designation provides all the essential information engineers need:

·Material: 304 Stainless Steel – A widely adopted grade for its corrosion resistance and mechanical strength.

·20592PL – Indicates the standardized design, with “PL” denoting Plate Welding Flange.

·DN20 – Refers to a nominal bore diameter of 20 mm.

·PN6 – A pressure class suitable for service conditions up to 6 bar.

The result is a flat circular flange welded to pipe ends, secured with bolts, ensuring a reliable, leak-tight joint.

Dimensional Standards

The 304 20592PL Flange DN20*PN6 complies with EN 1092-1 standards, making it compatible with global pipeline systems.

Key dimensions include:

·Nominal Diameter (DN): 20 mm

·Pressure Class (PN): 6 bar

·Bolt Holes: Drilled to PN6 specifications

·Sealing Surface: Flat face for gasket use

·Thickness: Defined by 20592PL guidelines

Adherence to these norms ensures interchangeability in multi-vendor and international projects.

Why Plate Welding Flanges Are Preferred

The Plate Welding Flange offers distinct benefits that explain its widespread use:

·Straightforward installation through welding and bolting.

·Flat sealing face that enhances gasket efficiency.

·Lower cost compared to thicker or specialty flange types.

·Standardized production, ensuring interchangeability across suppliers.

·Bulk availability, with Chinese supply chains able to meet high-volume orders.

This makes the 304 20592PL Flange DN20*PN6 a trusted option for both small-scale and large infrastructure projects.

Material Advantages of Stainless Steel 304

The choice of 304 stainless steel brings multiple operational advantages:

·Resistance to rust and mild chemicals, extending service life.

·Durability under continuous use, lowering replacement frequency.

·Excellent weldability, ensuring safe and secure joints.

·Suitability for hygienic applications, including potable water and food-grade systems.

This material is one of the reasons the Plate Welding Flange is highly reliable in demanding environments.

Practical Applications

Municipal Water Networks

Used extensively in urban water distribution systems, the 304 20592PL Flange DN20*PN6 helps prevent leaks and maintains water quality.

Gas Distribution Lines

Its PN6 rating makes it well-suited for low-pressure gas transportation, ensuring secure, long-lasting connections.

Heating and Cooling Systems (HVAC)

The flange is widely adopted in HVAC pipelines where tight sealing and reliability are crucial.

Industrial Piping

From pumps to valves, this flange connects equipment reliably while withstanding operational stress.

Light Chemical Processing

With stainless steel 304 offering moderate chemical resistance, the flange performs well in environments where mild corrosives are present.

Benefits of Sourcing from China

Global buyers often choose a Chinese manufacturer for their flange requirements because of:

·High-volume production capacity, supporting large-scale supply.

·Compliance with international norms, ensuring dimensional accuracy and reliability.

·Competitive pricing, offering cost efficiency without sacrificing quality.

·Flexible product range, with different diameters and pressure classes available.

For projects requiring batch supply, sourcing from China-based suppliers ensures on-time delivery and consistent quality.

Installation Recommendations

To maximize performance of the 304 20592PL Flange DN20*PN6:

1.Ensure pipe ends are cleaned and prepared before welding.

2.Apply correct welding techniques to maintain joint strength.

3.Select gaskets appropriate for the pipeline medium.

4.Tighten bolts in a cross-pattern for even load distribution.

5.Inspect joints after installation for sealing and alignment.

Conclusion

The 304 20592PL Flange DN20*PN6 highlights why the Plate Welding Flange remains a cornerstone in piping design. With its stainless steel 304 build, PN6 pressure class, and adherence to standardized dimensions, it provides long-term reliability across water, gas, HVAC, and light chemical pipelines.

For infrastructure projects requiring bulk supply from trusted Chinese manufacturers, this flange offers an optimal combination of durability, affordability, and compliance. In modern engineering, the Plate Welding Flange continues to be a reliable solution for safe and efficient pipeline connections.

References

GB/T 7714:Yu Y, Wang X, Wei S, et al. Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment[J]. Materials, 2025, 18(13): 3074.

MLA:Yu, Yue, et al. "Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment." Materials 18.13 (2025): 3074.

APA:Yu, Y., Wang, X., Wei, S., Chen, Z., Wang, Z., Li, M., & Liu, Z. (2025). Corrosion Behavior and Mechanism of 304 Stainless Steel Welded Joints in Simulated Freshwater Environment. Materials, 18(13), 3074.